Home / 660,918.13-991,429.73-281,842.10

Finding the Fourth Proportional to 660,918.13, 991,429.73 and 281,842.10

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Solution

The fourth proportional to 660,918.13, 991,429.73 and 281,842.10 is: 422,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,918.13 : 991,429.73 = 281,842.10 : x
  2. Step 2: Convert to fraction form
    660,918.13/991,429.73 = 281,842.10/x
  3. Step 3: Cross multiply
    660,918.13x = 991,429.73 × 281,842.10
  4. Step 4: Simplify right side
    660,918.13x = 279,426,637,105.63
  5. Step 5: Solve for x
    x = 279,426,637,105.63/660,918.13
  6. Step 6: Final answer
    x = 422,785.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.